Toy tank



FIG. 1 is a front and side perspective view of a toy tank showing my new design, the side perspective opposite being substantially a mirror image;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view showing the side thereof which is not visible in FIG. 1; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a toy tank, substantially as shown and described. 